feat: Rebuild as Court Manager Dashboard v2

- Complete rewrite for single Court Manager user
- Feature 1: Player Management (CRUD, ELO, skill level)
- Feature 2: Court Reservation (timeline, override)
- Feature 3: Match Event Builder (3-step wizard)
  - Step 1: Event setup with player selection + stage calculator
  - Step 2: Stage configurator (Open/Skill/RR/Tournament)
  - Step 3: Auto bracket generation
- Feature 4: Live Court View (main dashboard, 2x2 grid)
- Event Control: score entry, bracket advancement, court assignment
- Screen view: TV display per court (/screen/:id)
- Seed: 8 players, 4 courts, 1 completed + 1 active event
- Routes: / players courts events events/new events/:id screen/:id

backend/start.sh

@@ -1,21 +1,14 @@
 #!/bin/bash
 set -e
-echo "Waiting for database..."
-until python -c "
-import psycopg2, os
-try:
-    conn = psycopg2.connect(os.environ.get('DATABASE_URL', 'postgresql://servesync:servesync@db:5432/servesync'))
-    conn.close()
-    print('DB ready')
-except Exception as e:
-    print(f'DB not ready: {e}')
-    exit(1)
-"; do
-  sleep 2
-done
 
-echo "Running seed..."
-cd /app && python seed.py && echo "Seed complete" || echo "Seed failed (continuing)"
+echo "Waiting for database..."
+sleep 3
+
+echo "Running migrations..."
+python -c "from app.database import engine; from app.models import Base; Base.metadata.create_all(bind=engine)"
+
+echo "Seeding data..."
+python /app/seed.py || echo "Seed already exists or failed (non-fatal)"
 
 echo "Starting server..."
-exec uvicorn app.main:app --host 0.0.0.0 --port 8000
+exec uvicorn app.main:app --host 0.0.0.0 --port 8000 --workers 1